package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioProperties minioProperties;

    @Autowired
    private MinioClient minioClient;

    @Override
    public String upload(MultipartFile file) throws Exception {

        // 判断是否存在某个桶
        boolean b = minioClient.bucketExists(
                BucketExistsArgs.builder().bucket(minioProperties.getBucketName())
                        .build());

        // 给桶设置访问权限
        // 设置hello-minio桶访问权限
        if (!b) {
            minioClient.makeBucket(
                    MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());

            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }
                    """.formatted(minioProperties.getBucketName());

            minioClient.setBucketPolicy(
                    SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName())
                            .config(policy)
                            .build());
        }

        // 文件名不能重复 uuid
        String fileName = new SimpleDateFormat("yyyyMMdd")
                .format(new Date()) + "/" + UUID.randomUUID() + "_" + file.getOriginalFilename();

        // 上传对象到minio中
        minioClient.putObject(PutObjectArgs.builder().
                bucket(minioProperties.getBucketName()).
                object(fileName).
                stream(file.getInputStream(), file.getSize(), -1).
                contentType(file.getContentType()).build());
        // 拼接下访问地址
        String url = String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), fileName);
        return url;
    }
}
